I am trying to print from my 12.04 machine to the office KONICA-MINOLTA-bizhub-C20 printer. When I try to print, nothing happens and I get this error in the log file /var/log/cups/error_log
Returning IPP client-error-document-format-not-supported for Print-Job (ipp://localhost/printers/bizhub-C20-2) from localhost
I have tried adding a filter, using the latest driver (PPD file) but I don't really understand what I am doing. If anyone has any ideas of things I could try to get this working, I would be very gateful.

many thanks,